Blue Printed Chamber

[Out Back]

Had a Friend tell me that he had is rifle chamber blue printed ..............never heard of that ..........what was he talking about?

 

[WeiserBucks]

Most likely had the chamber cut with a specific reamer

 

[ShtrRdy]

Or he might have had his action "blue printed"?

 

[Mikecr]

Blue printed is the past tense of blue printing, which is the act of drawing up a plan.
Your friend had someone draw up a plan for his chamber?
That would be filing out a reamer print.